89720115471 has 24 divisors (see below), whose sum is σ = 148124645760. Its totient is φ = 51263359056.

The previous prime is 89720115439. The next prime is 89720115473. The reversal of 89720115471 is 17451102798.

It is a happy number.

89720115471 is a `hidden beast` number, since 8 + 97 + 2 + 0 + 11 + 547 + 1 = 666.

It is not a de Polignac number, because 89720115471 - 2⁵ = 89720115439 is a prime.

It is a super-3 number, since 3×89720115471³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89720115473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 590836 + ... + 726998.

It is an arithmetic number, because the mean of its divisors is an integer number (6171860240).

Almost surely, 2^89720115471 is an apocalyptic number.

89720115471 is a deficient number, since it is larger than the sum of its proper divisors (58404530289).

89720115471 is a wasteful number, since it uses less digits than its factorization.

89720115471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146635 (or 146632 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The spelling of 89720115471 in words is "eighty-nine billion, seven hundred twenty million, one hundred fifteen thousand, four hundred seventy-one".